08-24-2011, 11:26 PM
Join Date: Jul 2010
Location: Slovenia, Europe
| | Re: Allelopathy in Crypts
Shortly after my last post I bought C. wendtii "green", originating from the same nursery as my previous one. I planted it in a 9 cm pot and placed it in teh same aquarium where I lost it before. It is now growing nicely!
I found a discussion on allelopaty in Crypts on the heimbiotop website (in German). Something seems wrong with this site at the moment, but the author argues that there is no such thing as allelopaty in Crypts, because at aquarium plant nurseries all plants are grown in the same water, which circulates through all basins. A very strong argument, I must say. This excludes allelopaty through substances in teh general aquarium water (same also with my new wendtii "green").
So, how to distinguish between allelopaty at root-level and simple competition for nutrients by the roots of different species? It could be that some species are much better in extracting some substance from the soil, and other species simply die of a shortage of that substance. It this is some micro-nutrient, also fertilizing extra might not help on the long term ...